An access point's channel/frequency not showing up

My wifi card PCE-AC68 supports this frequency (channel 116) and it works on windows but on manjaro and ubuntu it does not show up at all.

System:
  Kernel: 5.8.11-1-MANJARO x86_64 bits: 64 compiler: N/A 
  parameters: BOOT_IMAGE=/boot/vmlinuz-5.8-x86_64 
  root=UUID=2984189c-17ba-4341-82b3-02015ace92c2 rw quiet apparmor=1 
  security=apparmor udev.log_priority=3 
  Desktop: KDE Plasma 5.19.5 tk: Qt 5.15.1 wm: kwin_x11 dm: SDDM 
  Distro: Manjaro Linux 
Machine:
  Type: Desktop Mobo: MSI model: B85-G43 GAMING (MS-7816) v: 2.0 
  serial: <filter> UEFI: American Megatrends v: 12.8 date: 04/10/2015 
CPU:
  Topology: Quad Core model: Intel Core i7-4790K bits: 64 type: MT MCP 
  arch: Haswell family: 6 model-id: 3C (60) stepping: 3 microcode: 28 
  L2 cache: 8192 KiB 
  flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx 
  bogomips: 64030 
  Speed: 1381 MHz min/max: 800/4800 MHz Core speeds (MHz): 1: 3760 2: 4745 
  3: 2922 4: 2512 5: 3070 6: 4487 7: 2738 8: 3450 
  Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled 
  Type: l1tf 
  mitigation: PTE Inversion; VMX: conditional cache flushes, SMT vulnerable 
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
  Type: meltdown mitigation: PTI 
  Type: spec_store_bypass 
  mitigation: Speculative Store Bypass disabled via prctl and seccomp 
  Type: spectre_v1 
  mitigation: usercopy/swapgs barriers and __user pointer sanitization 
  Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, 
  IBRS_FW, STIBP: conditional, RSB filling 
  Type: srbds mitigation: Microcode 
  Type: tsx_async_abort status: Not affected 
Graphics:
  Device-1: NVIDIA GP104 [GeForce GTX 1070] vendor: ASUSTeK driver: nvidia 
  v: 440.100 alternate: nouveau,nvidia_drm bus ID: 01:00.0 chip ID: 10de:1b81 
  Display: x11 server: X.Org 1.20.9 compositor: kwin_x11 driver: nvidia 
  display ID: :0 screens: 1 
  Screen-1: 0 s-res: 5760x1080 s-dpi: 92 s-size: 1590x301mm (62.6x11.9") 
  s-diag: 1618mm (63.7") 
  Monitor-1: DVI-D-0 res: 1920x1080 dpi: 92 size: 531x299mm (20.9x11.8") 
  diag: 609mm (24") 
  Monitor-2: HDMI-0 res: 1920x1080 hz: 60 dpi: 93 size: 527x296mm (20.7x11.7") 
  diag: 604mm (23.8") 
  Monitor-3: HDMI-1 res: 1920x1080 hz: 60 dpi: 94 size: 521x293mm (20.5x11.5") 
  diag: 598mm (23.5") 
  OpenGL: renderer: GeForce GTX 1070/PCIe/SSE2 v: 4.6.0 NVIDIA 440.100 
  direct render: Yes 
Audio:
  Device-1: Intel 8 Series/C220 Series High Definition Audio 
  vendor: Micro-Star MSI driver: snd_hda_intel v: kernel bus ID: 00:1b.0 
  chip ID: 8086:8c20 
  Device-2: NVIDIA GP104 High Definition Audio vendor: ASUSTeK 
  driver: snd_hda_intel v: kernel bus ID: 01:00.1 chip ID: 10de:10f0 
  Sound Server: ALSA v: k5.8.11-1-MANJARO 
Network:
  Device-1: Qualcomm Atheros Killer E220x Gigabit Ethernet 
  vendor: Micro-Star MSI driver: alx v: kernel port: d000 bus ID: 03:00.0 
  chip ID: 1969:e091 
  IF: enp3s0 state: down mac: <filter> 
  Device-2: Broadcom and subsidiaries BCM4360 802.11ac Wireless Network Adapter vendor: ASUSTeK driver: wl v: kernel modules: bcma port: d000 
  bus ID: 04:00.0 chip ID: 14e4:43a0 
  IF: wlp4s0 state: up mac: <filter> 
  IF-ID-1: docker0 state: down mac: <filter> 
Drives:
  Local Storage: total: 2.47 TiB used: 280.36 GiB (11.1%) 
  SMART Message: Required tool smartctl not installed. Check --recommends 
  ID-1: /dev/sda vendor: Kingston model: SHSS37A240G size: 223.57 GiB 
  block size: physical: 512 B logical: 512 B speed: 6.0 Gb/s serial: <filter> 
  rev: 00.r scheme: GPT 
  ID-2: /dev/sdb vendor: Crucial model: CT480BX200SSD1 size: 447.13 GiB 
  block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s serial: <filter> 
  rev: .6 scheme: MBR 
  ID-3: /dev/sdc vendor: Western Digital model: WD20EZRX-22D8PB0 
  size: 1.82 TiB block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s 
  rotation: 5400 rpm serial: <filter> rev: 0A80 scheme: GPT 
Partition:
  ID-1: / raw size: 252.36 GiB size: 247.40 GiB (98.03%) 
  used: 193.96 GiB (78.4%) fs: ext4 dev: /dev/sdb1 
Swap:
  Kernel: swappiness: 60 (default) cache pressure: 100 (default) 
  ID-1: swap-1 type: partition size: 8.34 GiB used: 0 KiB (0.0%) priority: -2 
  dev: /dev/sdb3 
Sensors:
  System Temperatures: cpu: 33.5 C mobo: 31.0 C gpu: nvidia temp: 53 C 
  Fan Speeds (RPM): cpu: 1086 fan-1: 0 fan-3: 0 fan-4: 748 fan-5: 552 
  gpu: nvidia fan: 0% 
  Voltages: 12v: N/A 5v: N/A 3.3v: 3.31 vbat: 3.28 
Info:
  Processes: 328 Uptime: 29m Memory: 15.56 GiB used: 5.75 GiB (37.0%) 
  Init: systemd v: 246 Compilers: gcc: 10.2.0 alt: 8 clang: 10.0.1 
  Packages: 2154 pacman: 2146 lib: 472 flatpak: 5 snap: 3 Shell: fish v: 3.1.2 
  running in: konsole inxi: 3.1.05 

When I run iwlist wlp4s0 scan | grep \Frequency it does not show up

                        Frequency:2.462 GHz (Channel 11)
                    Frequency:2.462 GHz (Channel 11)
                    Frequency:2.462 GHz (Channel 11)
                    Frequency:2.412 GHz (Channel 1)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:2.437 GHz (Channel 6)
                    Frequency:5.18 GHz (Channel 36)
                    Frequency:5.18 GHz (Channel 36)
                    Frequency:5.18 GHz (Channel 36)
                    Frequency:5.18 GHz (Channel 36)
                    Frequency:5.22 GHz (Channel 44)
                    Frequency:2.462 GHz (Channel 11)
                    Frequency:5.18 GHz (Channel 36)

I also used tools like linSSID with the same result

running iw list shows this

                Frequencies:
                        * 2412 MHz [1] (20.0 dBm)
                        * 2417 MHz [2] (20.0 dBm)
                        * 2422 MHz [3] (20.0 dBm)
                        * 2427 MHz [4] (20.0 dBm)
                        * 2432 MHz [5] (20.0 dBm)
                        * 2437 MHz [6] (20.0 dBm)
                        * 2442 MHz [7] (20.0 dBm)
                        * 2447 MHz [8] (20.0 dBm)
                        * 2452 MHz [9] (20.0 dBm)
                        * 2457 MHz [10] (20.0 dBm)
                        * 2462 MHz [11] (20.0 dBm)
                        * 2467 MHz [12] (20.0 dBm)
                        * 2472 MHz [13] (20.0 dBm)
                        * 2484 MHz [14] (disabled)
        Band 2:
                Bitrates (non-HT):
                        * 6.0 Mbps
                        * 9.0 Mbps
                        * 12.0 Mbps
                        * 18.0 Mbps
                        * 24.0 Mbps
                        * 36.0 Mbps
                        * 48.0 Mbps
                        * 54.0 Mbps
                Frequencies:
                        * 5160 MHz [32] (23.0 dBm)
                        * 5170 MHz [34] (23.0 dBm)
                        * 5180 MHz [36] (23.0 dBm)
                        * 5190 MHz [38] (23.0 dBm)
                        * 5200 MHz [40] (23.0 dBm)
                        * 5210 MHz [42] (23.0 dBm)
                        * 5220 MHz [44] (23.0 dBm)
                        * 5230 MHz [46] (23.0 dBm)
                        * 5240 MHz [48] (23.0 dBm)
                        * 5250 MHz [50] (disabled)
                        * 5260 MHz [52] (20.0 dBm) (radar detection)
                        * 5270 MHz [54] (20.0 dBm) (radar detection)
                        * 5280 MHz [56] (20.0 dBm) (radar detection)
                        * 5290 MHz [58] (20.0 dBm) (radar detection)
                        * 5300 MHz [60] (20.0 dBm) (radar detection)
                        * 5310 MHz [62] (20.0 dBm) (radar detection)
                        * 5320 MHz [64] (20.0 dBm) (radar detection)
                        * 5330 MHz [66] (20.0 dBm) (radar detection)
                        * 5340 MHz [68] (20.0 dBm) (radar detection)
                        * 5350 MHz [70] (disabled)
                        * 5360 MHz [72] (disabled)
                        * 5370 MHz [74] (disabled)
                        * 5380 MHz [76] (disabled)
                        * 5390 MHz [78] (disabled)
                        * 5400 MHz [80] (disabled)
                        * 5410 MHz [82] (disabled)
                        * 5420 MHz [84] (disabled)
                        * 5430 MHz [86] (disabled)
                        * 5440 MHz [88] (disabled)
                        * 5450 MHz [90] (disabled)
                        * 5460 MHz [92] (disabled)
                        * 5470 MHz [94] (disabled)
                        * 5480 MHz [96] (26.0 dBm) (radar detection)
                        * 5490 MHz [98] (26.0 dBm) (radar detection)
                        * 5500 MHz [100] (26.0 dBm) (radar detection)
                        * 5510 MHz [102] (26.0 dBm) (radar detection)
                        * 5520 MHz [104] (26.0 dBm) (radar detection)
                        * 5530 MHz [106] (26.0 dBm) (radar detection)
                        * 5540 MHz [108] (26.0 dBm) (radar detection)
                        * 5550 MHz [110] (26.0 dBm) (radar detection)
                        * 5560 MHz [112] (26.0 dBm) (radar detection)
                        * 5570 MHz [114] (26.0 dBm) (radar detection)
                        * 5580 MHz [116] (26.0 dBm) (radar detection)
                        * 5590 MHz [118] (26.0 dBm) (radar detection)
                        * 5600 MHz [120] (26.0 dBm) (radar detection)
                        * 5610 MHz [122] (26.0 dBm) (radar detection)
                        * 5620 MHz [124] (26.0 dBm) (radar detection)
                        * 5630 MHz [126] (26.0 dBm) (radar detection)
                        * 5640 MHz [128] (26.0 dBm) (radar detection)
                        * 5650 MHz [130] (26.0 dBm) (radar detection)
                        * 5660 MHz [132] (26.0 dBm) (radar detection)
                        * 5670 MHz [134] (26.0 dBm) (radar detection)
                        * 5680 MHz [136] (26.0 dBm) (radar detection)
                        * 5690 MHz [138] (26.0 dBm) (radar detection)
                        * 5700 MHz [140] (26.0 dBm) (radar detection)
                        * 5710 MHz [142] (26.0 dBm) (radar detection)
                        * 5720 MHz [144] (disabled)
                        * 5725 MHz [145] (disabled)
                        * 5730 MHz [146] (disabled)
                        * 5735 MHz [147] (13.0 dBm)
                        * 5740 MHz [148] (13.0 dBm)
                        * 5745 MHz [149] (13.0 dBm)
                        * 5750 MHz [150] (13.0 dBm)
                        * 5755 MHz [151] (13.0 dBm)
                        * 5760 MHz [152] (13.0 dBm)
                        * 5765 MHz [153] (13.0 dBm)
                        * 5770 MHz [154] (13.0 dBm)
                        * 5775 MHz [155] (13.0 dBm)
                        * 5780 MHz [156] (13.0 dBm)
                        * 5785 MHz [157] (13.0 dBm)
                        * 5790 MHz [158] (13.0 dBm)
                        * 5795 MHz [159] (13.0 dBm)
                        * 5800 MHz [160] (13.0 dBm)
                        * 5805 MHz [161] (13.0 dBm)
                        * 5810 MHz [162] (13.0 dBm)
                        * 5815 MHz [163] (13.0 dBm)
                        * 5820 MHz [164] (13.0 dBm)
                        * 5825 MHz [165] (13.0 dBm)
                        * 5830 MHz [166] (13.0 dBm)
                        * 5840 MHz [168] (13.0 dBm)
                        * 5850 MHz [170] (13.0 dBm)
                        * 5860 MHz [172] (13.0 dBm)
                        * 5870 MHz [174] (disabled)
                        * 5880 MHz [176] (disabled)
                        * 5890 MHz [178] (disabled)
                        * 5900 MHz [180] (disabled)
                        * 5910 MHz [182] (disabled)
                        * 5920 MHz [184] (disabled)
                        * 5930 MHz [186] (disabled)
                        * 5940 MHz [188] (disabled)
                        * 5950 MHz [0] (disabled)
                        * 5960 MHz [2] (disabled)
                        * 5970 MHz [4] (disabled)
                        * 5980 MHz [6] (disabled)
                        * 5990 MHz [8] (disabled)
                        * 6000 MHz [10] (disabled)
                        * 6010 MHz [12] (disabled)
                        * 6020 MHz [14] (disabled)
                        * 6030 MHz [16] (disabled)
                        * 6040 MHz [18] (disabled)
                        * 6050 MHz [20] (disabled)
                        * 6060 MHz [22] (disabled)
                        * 6070 MHz [24] (disabled)
                        * 6080 MHz [26] (disabled)
                        * 6090 MHz [28] (disabled)
                        * 6100 MHz [30] (disabled)
                        * 6110 MHz [32] (disabled)
                        * 6120 MHz [34] (disabled)
                        * 6130 MHz [36] (disabled)
                        * 6140 MHz [38] (disabled)

Broadcom WiFi cards are the most finicky to install under Linux ad Broadcom doesn’t support Linux at all so it’s the kernel team’s responsibility to reverse-engineer the Windows drivers and then create the Linux Broadcom modules.

So the options you have are:

  • Change the WiFi card to anything else but Broadcom
  • Use the channels that the Linux team has been able to reverse engineer, while waiting for a newer kernel (5.9 is out now!) where they’ve reverse-engineered more of the drivers…

:sob:

:sob:
I will try the newest version :confused:
thanks

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